2,3-Dihydroxy Fatty Acids-Containing Waxes in Storks (C iconiidae)

1996 ◽  
Vol 51 (9-10) ◽  
pp. 743-749 ◽  
Author(s):  
Jürgen Jacob ◽  
Gottfried Raab
Keyword(s):  
Fatty Acids ◽  
Mass Spectrometric ◽  
Hydroxy Fatty Acids ◽  
Uropygial Gland ◽  
Mass Spectrometric Fragmentation ◽  
Dihydroxy Fatty Acids ◽  
Fatty Acids And Alcohols

Uropygial gland secretions from five out of a total of seven species forming the genus Ciconia (family Ciconiidae; order Ciconiiformes) were found to consist of mixtures of monoester waxes, diester waxes, triester waxes, and triglycerides. Monoester waxes were composed of unbranched fatty acids and alcohols, whereas diester waxes derived from both 2- and 3-hydroxy fatty acids esterified with unbranched alcohols and fatty acids. Interestingly, triester waxes were also found deriving from either 2-hydroxy alkylmalonic acids or from erythro-2,3-dihydroxy fatty acids the latter of which have not yet been found in vertebrates so far. To compare the typical mass spectrometric fragmentation of this class of compounds erythro-2,3-dihydroxyhexadecanoic acid has been synthesized

Gas chromatographic–mass spectrometric detection of 2- and 3-hydroxy fatty acids as methyl esters from soil, sediment and biofilm

2003 ◽  
Vol 783 (2) ◽  
pp. 443-451 ◽  
Author(s):  
M.M. Keinänen ◽  
L.K. Korhonen ◽  
P.J. Martikainen ◽  
T. Vartiainen ◽  
I.T. Miettinen ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Methyl Esters ◽  
Mass Spectrometric ◽  
Mass Spectrometric Detection ◽  
Hydroxy Fatty Acids ◽  
Soil Sediment ◽  
Chromatographic Mass

scholarly journals Olive oil from the 79 A.D. Vesuvius eruption stored at the Naples National Archaeological Museum (Italy)

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Raffaele Sacchi ◽  
Adele Cutignano ◽  
Gianluca Picariello ◽  
Antonello Paduano ◽  
Alessandro Genovese ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Olive Oil ◽  
Volatile Compounds ◽  
Radiocarbon Dating ◽  
Analytical Techniques ◽  
Mass Spectrometric ◽  
Hydroxy Fatty Acids ◽  
Glass Bottle ◽  
The World

Abstract Using a range of chromatographic, spectroscopic, and mass spectrometric analytical techniques, we characterized one of the “edible items” found at the Vesuvius archeological sites and guarded at the National Archaeological Museum of Naples (MANN) in Naples, Italy. We authenticated the specimen contained in a glass bottle (Mann-S1 sample) as originally olive oil and mapped the deep evolution throughout its 2000 years of storage. Triacylglycerols were completely hydrolyzed, while the resulting (hydroxy) fatty acids had partly condensed into rarely found estolides. A complex pattern of volatile compounds arose mainly from breakdown of oleic acid. With excellent approximation, radiocarbon dating placed the find at the time of the Plinian Mount Vesuvius eruption in 79 A.D., indicating that Mann-S1 is probably the oldest residue of olive oil in the world found in bulk amount (nearly 0.7 L).

Über die Biogenese von Aromastoffen bei Pflanzen und Früchten / About the Biogenesis of Aroma-Substances in Plants and Fruits

1971 ◽  
Vol 26 (8) ◽  
pp. 774-779 ◽  
Author(s):  
Roland Tressl ◽  
Friedrich Drawert
Keyword(s):  
Fatty Acids ◽  
Double Bond ◽  
Osmium Tetroxide ◽  
Octanoic Acid ◽  
Mass Spectrometric ◽  
Valeric Acid ◽  
Similar Composition ◽  
Mass Spectrometric Fragmentation

Banana slices metabolize 8-14C-octanoic acid via β-oxidation to ketones, alcohols, and fatty acids depending on the climacteric state of the fruits. Simultaneously, esterification of the octanoic acid and its reduction to octanol take place. The latter was found as alkyl component in various esters.As the typical banana-aroma component cis-hepten- (4) -ol- (2) was found. The position of the double bond was determined by treatment with osmium tetroxide, sililation of the resulting hydroxycompound, and mass spectrometric fragmentation.Strawberries have a similar composition of the aroma but cis-hepten- (4) -ol- (2) was not formed.The occurence of 14C-labelled oenanth- and valeric acid is explained by α-oxidation.

Massenspektroskopische Untersuchungen an Glycosylglyceriden / Mass Spectrometric Investigation of Glycosyl Glycerides

1973 ◽  
Vol 28 (9-10) ◽  
pp. 499-504 ◽  
Author(s):  
H. Budzikiewicz ◽  
J. Rullkötter ◽  
E. Heinz
Keyword(s):  
Fatty Acids ◽  
Mass Spectrometric ◽  
Spectrometric Investigation ◽  
Mass Spectrometric Investigation ◽  
Special Regard ◽  
Fragmentation Behavior ◽  
Mass Spectrometric Fragmentation

Abstract The mass spectrometric fragmentation behavior of glycosyl glycerides is discussed with special regard to the localisation of the fatty acids present in the molecule and to the applicability for mixture analyses.

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